ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen

ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen

[ Upstream commit d2cd795c4ece1a24fda170c35eeb4f17d9826cbb ]

The auto-parser assigns the bass speaker to DAC3 (NID 0x06) which
is without the volume control. I do not see a reason to use DAC2,
because the shared output to all speakers produces the sufficient
and well balanced sound. The stereo support is enough for this
purpose (laptop).

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20191129144027.14765-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>